Fresh-air heater



July W' A' SPARKS FRESH AIR HEATER Filed Oct. 25, 1926 3 Sheets-Sheet l IVI MHH l.

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July 12, 1927.

INVENTOQ.

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Patented July 12, 1927.

UNITED STATES.

PATENT ermee.

FRESH-AIR HEATER@ Application filed October 25, 1926. Serial No. 144,092.v

This invention relates to improvements in fresh airheaters, and the objects ,of the invention are to provide a durable, light and simply constructed apparatus for *heating and Ventilating purposes.

Further objects are to provide a device of this description for introducing fresh warmed air into buildings and the like and designed to replace hot air 'furnaces vnow in use.

lith the foregoing and other objects hereinafter more fully described in view, my invention consists ofthe novel combination,

construction and arrangement of parts as described in the present specification and illustrated in the accompanying' drawings which form part of the application.

The invention comprises arcasing having an innercasing spaced therefrom and within the inner casing a chamber having a plurality of air and gas passageways therein, air being supplied to said chamber from the outside, and means communicating with the air and gas passageways respectively for` discharging the heated air and gases on the inner chamber being heated. i

Referring now to the drawings, in which like characters of reference indicate corresponding parts in each figure,

Figure 1 is a side elevation of my improved air heater Figure 2 is a `plan view of the same.

Figure 3 is .a longitudinal section taken through one of the waste gas fumes.

Figure 4 is a section on the line 4-4 of Figure 3. j f

Figure 5 is a section on the line 5-5 of Figure 3.

Figure 6 is a plan view of the radiating member.

Figure 7 is al fragmentary perspective view of the waste gas iues.' f

Figure 8 is a longitudinal section through one' end of the gas ues. L

Figure 9 is .a longitudinal section through a modified type of air heater; and

Figure 10 is a perspective view showing the combustion chamber and radiatingmembers which may bemanufactured as individual units. j

In the drawings, in which a preferred form of my invention is disclosed, 10 designates an outer casing'of suitable material such as metal within which is an inner casing 11 spaced therefrom and within which are arranged longitudinally a plurality of flues 14 having therebetween air passageways 13.

These fluesr14 are provided with baffles 27 0h will sothatfthe gases passing therethrou,1

be diverted before entering the exit flue Q5.

The opposite ends of the flues 14 communicate with a combustion chamber 28 in which is arranged a gas burner 15 or other suitable heating means. f

1t will thus be seen that the heat from thel combustion chamber will pass through the iues-14 to heat them and through them the air in the passageways 13. From the flues ther heated airflows into the header :24 and thence into the exit flue 2V At the oppositek end of the apparatus is a fresh air intake 16 through which air enters the apparatus andy travels in the passageways 13 between the lines 14 and thence out of the t apparatus in preheated form for distribution through the hot air exit 18, see Figure 1.

Adjacent one end of the apparatus is a door 19 communicating with a chamber 20 in which may be placed a vessel or the like 21 to humidify, or disinfect, or perfume the air as may be desired as it passes thereover.

The fresh air intake 16 is provided with a baille 22 for the purpose of controlling the air supply .down and over the vessel 21 before entering the space 23.

The outer ends of the flues as shown in Figure 3, are sloped to more effectively defleet the heated air and gas entering therethrough'so that the air inpassing' between the fiues is directed upwardly towards the hot air outlet 18.'

Fiointhe foregoing it will be seen that on theV apparatus being connected up andthe burner started, the-fines communicating with the combustion chamber 28 will become heatedl and that the cold air being admitted from the vopposite endv of the apparatus and flowing between the heated iues will become heated as itA passes along the passageways 13 and up into the hot air exit flue 18, the gas fumes eventuallyr passing through the iues. 14 into the header 24 through the short pipe openings 24 and thence to the main exit flue 25. Furthermorel as Ythe cold air enters the intake 16 it travels overa vessel 21 in the lchamber 2() provided with a door 19, where it is moistened. The arrows 26 indicate the heut radiating passageways therebetween eoinnniniratine reepeetirelyY with the eold air intatte and the hot air diseharg'e tine 18, the products ot eonibustion in the orin of waste gases from the burner beinel safely conveyed b ii the linee ll to the header 24C through the pipe Q- tl thence to the exit flue 25 by the tine thus not only renderingl the device sate hut etlieient in operation.

In the inoditied torni as particularly illus trated in Figures 9 and l0. the improved air hater is inade ot individual units. which nniy he nninntactured as such and when asseinhled torni a complete air heater.

The 'asingg or shell itl is Substantially the saine as heretofore described, and has detat-habi)Y Secured therein h v ineens of bolts or the like, the eonibnstion ehaniber 2C. This chamber in itselt' is snhetantiall)7 inrerted V-shaped in Ytornnititni and is provided with a lip 29 which may he secured to the iaeing;` lo through the niediuni ot' the oriliees Slt) by any well lznown ineens-s.

Adjacent the univer portion ot the channber are a pluraiit);Y ot flanged oriiices 3l through which pass the hot gases oit' conduistion. 'ilhe elongated heat` radiating' 1nen1- hers 32 are adapted to tit tightly against the wall 321i et the chamber 28, while the upper portion will engage the tlanges olf the oriiice 3i..

`.eidjaeent the centre otl the .lines niain tlue pipe ill, while below the base thereolE is a battle nieinber ilo.

ln operation the exteneion itl ot the tresh air pipe is preterabli plai'ed in eontaet with the outside air to elmnre a constant supply ot' elean lresh air. 'lhe air naesing through the openii'i;l lt moves over the Vessel :2t and etrilies the heat radiating` enrlaees ot the nieniher li, where it is heated passing oli' lhrouggjh the outlet te to be dietrihnted in any desired manner, while the hot gases ot nmnbnstion pases through the opening@r di alongl the lneinber l2 where theyv eontact with and are delieeled by the balile lf3 and iinnllfY are diseharnml through the line 54.

The essential features ot the inodiiied torni oi' air lieaterare the laet [hat each unit may oe inanulaetnred separately, in other worde the l "ig, the cover tln-:i-elor, the conibnstion chauiber and radiatinicr nieinber, ete.,

is a

may he manufactured as a part, and there assembled as a complete unit.

As many Changes could be made in the above eonetrnetion, and inany apparently widelliv ditlerent en'ihodiimnite oit my invention, within the scope of the elain'is, constructed without departing 'roin the spirit or scope thereof, it is intended that all inatter contained in the aeeonlpanying speeih'ca.- tion and drawings shall be interpreted as illustrative and not in av limiting sense.

that I elaiin as my invention is:

l. A tressh air heater eoinprisinijv in eo1n bination, an outer easing, an inner easing; spaced there'lroin and inlapted to provide a eonibustion chamber eonnnunieating with the inner easing, a header ronnnunicatii1g,` with the opposite end oi" said easing, a plurality ol substantially l/shaped fines eoinnnniiicating; with the eoinhnetion chainher and the header, said tlnee` beini .spaced` troni one another to torni air message rays, air intake and diseharge ineans communicating with said paseagewaye, .means for heating the eoinlnistion chaniher and a (.liselnirgge tine vonnnnnieating with the header whereby the cold air passes through the passagewaye to loe preheated and then discharged and whereby the heated gases pass through the .llues to radiate heat to the air passagewniys and thence to ldie diseharge .tlue through the header.

:2. fin a device ot the eliaraeter described and in eoaibination, an outer easinel and an inner caring in spaeial relationship thereto, a coinbnsthni chamber in the inner easing, a cold air intake eon'nnunieating with the in` ner casing, a pluralityy olf lues connnnnieating with the ronilinstion ehaniher at one end, a discharge tine, a header eoniniuuieating with the dieehargge fin and with thi` atoreeaid lines, hallle nieaneA in .Lsaid line, a plu* ralii), ot passagewajys lorined between the ilnee and ronnnunheating with the cold air intake and means tor nioisteniner the, air in transit troni the eold air intake to said basaaiegeways, a hot air diseharge piberonnnn` niratinig; direetly with said passagewzrys.

ln witnees whereot` t have lnaennlo set nij; hand.

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